-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Two steps are required to cryptographically verify image integrity. 1. By verifying the integrity of this signature file, you can be sure that the checksums included in this file are valid. $ gpg --keyserver hkp://pool.sks-keyservers.net --recv-keys 0xA16EB94D $ gpg --list-keys 0xA16EB94D pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] uid Turnkey Linux Release Key $ gpg --verify turnkey-projectpier-14.1-jessie-amd64.ova.sig gpg: Good signature from "Turnkey Linux Release Key" 2. By calculating the image checksum and validating the hashed value is the same as listed below, you can be sure the image was not corrupted in transit or tampered with. $ md5sum turnkey-projectpier-14.1-jessie-amd64.ova 43eae7125a3c4893e69065da39d8615e $ sha1sum turnkey-projectpier-14.1-jessie-amd64.ova 50551a6ffd37ff355e7ab1f901d106182eb884ef -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn5AAoJEIXCXpWhbrlNWSUH/R5KLllg0dQCmD0sEun5WYAH iYFQJaXXPrCWAEuu0aIY/SknNBpvRd89uTYtbZnwNEsjUKADDmttBTeVDxNw9CUj ldjG5FACFRjsW8sUZ2LmxH4AZ5Untsy5fwHSaRiZbrtttROSSue4p1OCo9STR6Dc vTjBZiv+drF7DYEnKaqoVM9Sra3oDirIR+b2+rvb1icKk+ESr/UQotBJtiTY1L/9 4EcAZAsAC+F3XWEEPv52FrjVOCnhX9lwFvqSVlAPhupnAVguxUYZiUYRdaJ1KsKo MIMtVg05jkVCyuEWLFXSGHntcNZc9kos4QGMFtVpx62oenzOMDEP8kMR6JZQtXg= =JXh+ -----END PGP SIGNATURE-----